CN207717976U - Laser locating apparatus - Google Patents
Laser locating apparatus Download PDFInfo
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- CN207717976U CN207717976U CN201820102073.5U CN201820102073U CN207717976U CN 207717976 U CN207717976 U CN 207717976U CN 201820102073 U CN201820102073 U CN 201820102073U CN 207717976 U CN207717976 U CN 207717976U
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Abstract
The utility model discloses a kind of laser locating apparatus, laser locating apparatus includes：Distance measuring unit, acceleration sensing unit and control unit.Wherein, distance measuring unit measures laser locating apparatus in object space to the distance of practical point of irradiation on horizontal direction face and to the distance of practical point of irradiation on vertical direction face respectively；Acceleration sensing unit measures the current acceleration direction of laser locating apparatus；Control unit, when the angular deviation between front direction gravity direction, the elements of a fix of the laser locating apparatus in object space is calculated using the distance to practical point of irradiation on horizontal direction face and the distance to practical point of irradiation on vertical direction face of measurement according to current acceleration direction and distance measuring unit.The accuracy of vertical range of the utility model by getting the distance in horizontal direction face and/or to vertical direction face compensates, and realizes fast accurate positioning of the target object in object space, and improve the use reliability of the device, using accuracy etc..
Description
Technical field
The utility model is related to space orientation technique field more particularly to a kind of laser locating apparatus.
Background technology
Laser range finder uses in building engineering construction mostly as a kind of distance mearuring equipment.Laser in the prior art
Rangefinder carries out range measurement by pulse or phase, measures two target points first and then fixes algorithm by giving tacit consent to formula again
Vertical range between obtaining at 2 points that measure object plane, and obtaining laser range finder and the vertical range of object dignity can only use
Visual sight measures or uses auxiliary accessories.However the accuracy of measurement of visual sight is poor not accurate enough so as to cause positioning measurement
Really and conveniently；And accessory subsidiary process is more cumbersome, causes to measure not convenient enough while can also increase the error in measuring.
In order to improve above-mentioned measurement method, assist surveying by installing spirit bubble additional on laser range finder in the prior art
Amount.But spirit bubble subsidiary must can be measured when it is center condition that spirit bubble, which is debugged, therefore it is susceptible to tune
Examination is slow, spirit bubble is susceptible to shake, using it is cumbersome the problems such as.That is, traditional laser range finder is basically by people
Work estimates laser range finder basic horizontal or vertical rear progress ranging localization, or is surveyed again after being calibrated by other calibrating installations
Amount, these operations were not only cumbersome, but also will produce larger error so that the Experience Degree of user is poor.
Therefore, it is simple, accurately and rapidly empty to realize that there is an urgent need for a kind of laser locating apparatus that measurement is accurate, easy to operate
Between position.
Invention content
In view of the above-mentioned problems, the utility model proposes a kind of accurate positioning, laser locating apparatus easy to operation, in turn
Improve sterically defined accuracy and the Experience Degree of user.
On the one hand the utility model proposes a kind of laser locating apparatus comprising：Distance measuring unit, acceleration sensing unit
And control unit.The distance measuring unit measures the laser locating apparatus in object space to practical on horizontal direction face respectively
The distance of point of irradiation and distance to practical point of irradiation on vertical direction face；It is fixed that the acceleration sensing unit measures the laser
The current acceleration direction of position device；Described control unit is according to the angle between the current acceleration direction and gravity direction
Deviation, using described in measurement to the distance of practical point of irradiation on horizontal direction face and described to actually irradiating on vertical direction face
The distance of point calculates the elements of a fix of the laser locating apparatus in the object space.
In one embodiment, the distance measuring unit includes：First range finder module and the second range finder module.Described first
Range finder module emits and receives first measuring beam in the horizontal direction face in the object space, described to level to measure
The distance of practical point of irradiation on the face of direction；Second range finder module emits and receives the vertical direction in the object space
Second measuring beam in face, to measure the distance to practical point of irradiation on vertical direction face；Wherein, described first light is measured
Angle between beam and second measuring beam is set as fixed angle.
In one embodiment, the distance measuring unit includes：Laser emitting module, spectral module and laser pick-off measure
Module.The laser emitting module emits light beam；The light beam that the laser emitting module emits is divided by the spectral module
First measuring beam in the horizontal direction face in the object space and to second of the vertical direction face in the object space
Measuring beam；Wherein, the angle between first measuring beam and second measuring beam is set as solid by spectral module
Determine angle；The laser pick-off measurement module receives first measuring beam and second measuring beam, described in measurement
The distance of practical point of irradiation and the distance to practical point of irradiation on vertical direction face on to horizontal direction face.
In one embodiment, the distance measuring unit includes：Laser transmitting-receiving measurement module, spectral module, wherein：It is described
Laser transmitting-receiving measurement module emits light beam；The light beam is divided into the horizontal direction in the object space by the spectral module
First measuring beam in face and the second measuring beam to the vertical direction face in the object space, wherein spectral module will
Angle between first measuring beam and second measuring beam is set as fixed angle；The laser transmitting-receiving measures mould
Block receives first measuring beam and second measuring beam, described to practical point of irradiation on horizontal direction face to measure
Distance and the distance to practical point of irradiation on vertical direction face.
In one embodiment, the range of the fixed angle is 85 ° -95 °.
In one embodiment, the fixed angle is 90 °.
In one embodiment, when the fixed angle is more than or less than 90 °, deviation is equipped in described control unit
Reparation value, and utilize the angular deviation between the deviation reparation value, the gravity direction and the current acceleration, institute
The distance of practical point of irradiation and the distance to practical point of irradiation on vertical direction face are stated on horizontal direction face to calculate
The elements of a fix of the laser locating apparatus in the object space.
In one embodiment, when the laser locating apparatus falls from arbitrary height, the acceleration sensing list
The acceleration information of three orthogonal directions in falling process is sent to described control unit by member in real time, and described control unit is logical
It crosses and obtains all acceleration informations of three orthogonal directions described in the falling process and calculate the laser locating apparatus
The height and record drop number fallen.
In one embodiment, described control unit further includes alarm module；Be higher than when the height fallen and/or
When equal to height threshold, the alarm module sends out alarm signal.
In one embodiment, described control unit further includes alarm module；When the height fallen is less than described
Height threshold, but when the drop number of the laser locating apparatus is more than the drop number threshold value of the height fallen, it is described
Alarm module sends out alarm signal.
Compared with the prior art, laser locating apparatus disclosed by the utility model is by means of object space pair for the utility model
Target location carries out the compensation method of positional accuracy, realizes target object desired quick positioning, example in object space
Such as, it is equidistantly placed or ratio etc. point is placed, finally to realize target object putting in object space and be laid out.
Description of the drawings
Refer to the attached drawing shows and illustrates embodiment.These attached drawings for illustrating basic principle, to illustrate only for
Understand the necessary aspect of basic principle.These attached drawings are not in proportion.In the accompanying drawings, identical reference numeral indicates similar
Feature.
Fig. 1 shows the structural schematic diagram of laser locating apparatus according to the present utility model；
Fig. 2 shows the structural schematic diagrams of the laser locating apparatus of first embodiment according to the present utility model；
Fig. 3 shows the embodiment schematic diagram of the laser locating apparatus of first embodiment according to the present utility model.
Specific implementation mode
It, will be with reference to constituting the appended attached of the utility model part in the specific descriptions of following preferred embodiment
Figure.The specific embodiment that can realize the utility model has been illustrated by way of example in appended attached drawing.It is illustrative real
It applies example and is not intended to limit all embodiments according to the present utility model.It is appreciated that without departing from the scope of the utility model
Under the premise of, other embodiment can be utilized, structural or logicality modification can also be carried out.Therefore, below specific
It describes and unrestricted, and the scope of the utility model is defined by the claims appended hereto.
The utility model is directed to a kind of laser locating apparatus, which can realize according to laser positioning
Device currently with horizontal plane inclined angle come automatic correction-compensation measured by range error, with calculate vertically away from
From；When use space positions, laser locating apparatus is placed as by level without artificially ensuring using the laser locating apparatus
Or vertical state, as long as the laser locating apparatus tilt within a certain angle (for example, within ± 10 °), just available device with
The vertical range of wall or object in space.The laser locating apparatus includes：Acceleration sensing unit, control unit and
Distance measuring unit.Wherein, distance measuring unit measures the distance in object space to horizontal direction face and the distance to vertical direction face,
Control unit receive the acquisition of acceleration sensing unit gravity direction and measurement to the distance in horizontal direction face and to lead
The distance in vertical direction face measures laser locating apparatus in mesh according to gravity direction and distance measuring unit when the angular deviation of front direction
Mark the elements of a fix in space.
Fig. 1 shows the structural schematic diagram of laser locating apparatus according to the present utility model.In Fig. 1, laser positioning fills
Setting 101 includes：Distance measuring unit 110, acceleration sensing unit 104 and control unit 105.In the present embodiment, distance measuring unit
110 for measuring laser locating apparatus 101 in object space to the distance in horizontal direction face and to vertical direction face respectively
Distance；Acceleration sensing unit 104 is used to measure the gravity direction of laser locating apparatus；Control unit 105 is used for according to gravity
Direction and distance measuring unit work as the angular deviation of front direction, using the distance of measurement to horizontal direction face and to vertical direction face
Distance calculates the elements of a fix of the laser locating apparatus 101 in object space.
Embodiment 1
According to fig. 2, the embodiment 1 of the present embodiment shown in Fig. 3, in laser locating apparatus 101 in this embodiment, packet
Distance measuring unit 110, acceleration sensing unit 104 and control unit 105 are included；Wherein, distance measuring unit 110 includes the first survey
Away from module 102 and the second range finder module 103.In the present embodiment, the first range finder module 102 is for emitting and receiving target empty
Between in horizontal direction face the first measuring beam, to measure the distance of practical point of irradiation on horizontal direction face；Second ranging
Module 103 is used to emit and receive second measuring beam in the vertical direction face in object space, to measure vertical direction
The distance of practical point of irradiation on face.In addition, in the present embodiment, the angle between the first measuring beam and the second measuring beam is set
It is set to fixed angle.
As shown in Figure 2 and Figure 3, the concrete operating principle of embodiment 1 is as follows：
Laser locating apparatus 101 is placed in object space essentially horizontal or essentially vertical state, the of distance measuring unit 110
One range finder module 102 emits and receives first measuring beam in the horizontal direction face in the object space, and measures water
The distance d2 of square point of irradiation practical on face；Second range finder module 103 is for emitting and receiving the vertical in object space
Second measuring beam in direction face, to measure the distance d1 of practical point of irradiation on vertical direction face.Acceleration sensing unit 104
The current acceleration direction of laser locating apparatus 101 is sensed, and the acceleration directional information is sent to control unit 105.
The angular deviation that control unit 105 calculates current acceleration direction and gravity direction is α, then according to angular deviation α and with
Lower algorithm is modified the actual location coordinate (X1, Y1) that laser locating apparatus 101 is calculated in object space：
X1=d1cos α；Y1=d2cos α.
That is, completing the space orientation at 101 position of laser locating apparatus.Laser locating apparatus 101 is pre- using its
Rapid make of positioning datum point 120 being first arranged accurately positions (it should be noted that the positioning datum of laser locating apparatus 101
Point 120 is not limited to position shown in Fig. 3).
Embodiment 2
In laser locating apparatus 101 in this embodiment, include distance measuring unit 110, acceleration sensing unit 104 with
And control unit 105；Wherein, distance measuring unit 110 includes laser emitting module, spectral module and laser pick-off measurement module
(being not shown in attached drawing) laser emitting module laser pick-off measurement module.
The concrete operating principle of embodiment 2 is as follows：
Laser locating apparatus 101 is placed in object space essentially horizontal or essentially vertical state, distance measuring unit 110 swashs
Optical transmitter module emits light beam, and the light beam that laser emitting module emits is divided into the horizontal direction in object space by spectral module
First measuring beam in face and the second measuring beam to the vertical direction face in object space, laser pick-off measurement module receive
First measuring beam and the second measuring beam, to measure the distance d2 of practical point of irradiation on horizontal direction face and arrive vertical direction
The distance d1 of practical point of irradiation on face.Acceleration sensing unit 104 senses the acceleration direction of laser locating apparatus 101, and
The acceleration directional information is sent to control unit 105.Then, the operation principle of control unit 105 is the same as example 1 above institute
The operation principle of description is calculated actual location coordinate of the laser locating apparatus 101 in object space.
It should be noted that spectral module is by the folder between the first measuring beam and the second measuring beam in the present embodiment
Angle is set as fixed angle.
Embodiment 3
In laser locating apparatus 101 in this embodiment, include distance measuring unit 110, acceleration sensing unit 104 with
And control unit 105；Wherein, distance measuring unit 110 includes laser transmitting-receiving measurement module, spectral module (being not shown in attached drawing)
Laser transmitting-receiving measurement module.
The concrete operating principle of embodiment 3 is as follows：
Laser locating apparatus 101 is placed in object space essentially horizontal or essentially vertical state, distance measuring unit 110 swashs
Light receives and dispatches measurement module and emits light beam, and the light beam that laser transmitting-receiving measurement module emits is divided into object space by spectral module
First measuring beam in horizontal direction face and the second measuring beam to the vertical direction face in object space, laser transmitting-receiving measure
Module receives the first measuring beam and the second measuring beam, to measure the distance d2 of practical point of irradiation on horizontal direction face and arrive
The distance d1 of practical point of irradiation on vertical direction face.Acceleration sensing unit 104 senses the acceleration of laser locating apparatus 101
Direction, and the acceleration directional information is sent to control unit 105.Then, the operation principle of control unit 105 is the same as above
Operation principle described in embodiment 1 is calculated actual location coordinate of the laser locating apparatus 101 in object space.
It should be noted that spectral module is by the folder between the first measuring beam and the second measuring beam in the present embodiment
Angle is set as fixed angle.
In embodiment 1-3,104 preferred gravity accelerometer of acceleration sensing unit.In addition, the first measuring beam
The range of fixed angle between the second measuring beam is 85 ° -95 °, and preferably, which is 90 °.When this is solid
When determining angle more than or less than 90 ° (for example, 83 °, 91 ° etc.), deviation reparation value i (fixed angles are equipped in control unit 105
Degree and 90 ° of difference), and using deviation reparation value i, angular deviation α, measure to practical point of irradiation on horizontal direction face
Distance d2 and the laser locating apparatus is calculated according to following formula exists to the distance d1 of practical point of irradiation on vertical direction face
The elements of a fix (X1, Y1) of object space：
X1=d1cos (α+i), Y1=d2cos α (wherein, 90 ° of 85 °≤fixed angle ＜)；
X1=d1cos (α-i), Y1=d2cos α (wherein, 90 ° of fixed angle≤95 ° ＜).
In conclusion in embodiment 1-3, by the setting of acceleration sensing unit 104, automatic correction-compensation laser
The practical vertical range of positioning device 101 and object dignity.When carrying out positioning measurement using the laser locating apparatus 101, behaviour
Make simply, conveniently, it is accurate to measure, to substantially increase measurement efficiency.When carrying out space orientation, laser locating apparatus does not have to
Artificial places in abswolute level or vertical state, as long as being tilted a certain angle in (± 10 °) just available device and metope
Or the vertical range of object.
Embodiment 4
In the present embodiment, laser locating apparatus 101 may be used any one of structure of embodiment 1-3 and realize and determines
Position measures.Laser locating apparatus 101 further includes alarm module (attached to be not shown in figure).When laser locating apparatus 101 is from arbitrary height
When degree falls, acceleration sensing unit 104 will be believed the acceleration of three orthogonal directions (X-axis, Y-axis and Z axis) in falling process
Breath is sent to control unit 105 in real time, and control unit 105 is by obtaining described in the falling process three orthogonal directions
All acceleration informations calculate the height fallen and record drop number of laser locating apparatus 101.When the height fallen is high
When height threshold, alarm module sends out alarm signal.When the height fallen is less than height threshold, but laser is fixed
When the drop number of position device 101 is more than the drop number threshold value of the height fallen, alarm module sends out alarm signal.
The preferred 3-axis acceleration sensor of the present embodiment is as acceleration sensing unit 104.Preferred three axis of the present embodiment
The measurement range that acceleration transducer has +/- 2g, +/- 4g, +/- 8g, +/- 16g variable, highest 13bit resolution ratio are fixed
4mg/LSB sensitivity, the characteristics such as multi-motion state-detection and flexible interrupt mode.All these characteristics help to detect
Object falls application.The concrete operating principle of the embodiment is as follows：
When laser locating apparatus 101 is static, the original state of acceleration sensing unit 104 is：aX=0g, aY=-1g,
aZ=0g.When laser locating apparatus 101 falls, due to the vector sum meeting of object acceleration during the decline of freely falling body
It drops to close to 0g namely laser locating apparatus 101 is in state of weightlessness, and the height of duration and freely falling body has
It closes.For it is general fall situation for, although weightlessness do not have as freely falling body it is so apparent, can also occur close plus
Speed is less than the case where 1g (resultant acceleration should be greater than 1g under normal conditions).Therefore, this can be as falling first of state
Basis for estimation, at this time the 3-axis acceleration sensor detect state of weightlessness.
When laser locating apparatus 101 drops into horizontal direction face or hit with other objects, then will produce very big
Impact force, this impact force can detect that acceleration is sentenced beyond certain thresholding by the 3-axis acceleration sensor
It is disconnected.
After falling, laser locating apparatus 101 may be overturn, thus the direction of object can with it is original it is static initially
State is different.This makes the numerical value of the 3-axis acceleration under the stationary state after falling and the 3-axis acceleration under original state
It is different.For example, acceleration of gravity is by aY=-1g becomes aZ=-1g then illustrates that laser locating apparatus 101 has occurred and laterally falls
It falls.Constitute the entire technical solution for falling detection in summary.It is specific as follows：
When laser locating apparatus 101 takes place from stationary state to be fallen, 3-axis acceleration sensor detects weightlessness
State, and the state of weightlessness information is sent to control unit 105；Then when laser locating apparatus 101 strikes horizontal direction
When face or other objects, 3-axis acceleration sensor detects the appearance of impact (or shock) state, and the impact conditions are believed
Breath is sent to control unit 105；Control unit 105 is using between the time obtained between state of weightlessness information and impact conditions information
Every the height that calculating object falls：
Wherein, the height that s- falls, t- fall time existing for state, g- acceleration of gravity.
In the present embodiment, when the 3-axis acceleration sensor detects the stationary state after hitting, by the static shape
The corresponding acceleration information of state is sent to control unit 105, when the control unit 105 receives above- mentioned information, shows this
Fall effectively to fall, to record drop number.
For example, certain that ought calculate laser locating apparatus 101 by acceleration sensing unit 104, control unit 105 falls
When the height fallen is more than and/or is equal to 1.6m, alarm module sends out alarm signal.When pass through acceleration sensing unit 104, control
When certain height fallen of the calculating of unit 105 is equal to 400mm, and judge that total drop number of laser locating apparatus 101 is big
When 6 times, alarm module sends out alarm signal.When alarm module sends out alarm signal, user is reminded to need school
Just and/or the maintenance process laser locating apparatus.
In example 4, the laser when place height is fallen is fixed using acceleration sensing unit judges for laser locating apparatus
Whether the impact force that the inertia of position device freely falling body generates has exceeded the specified protection domain for the reliability that positioning device uses,
To remind whether user needs to calibrate or repair the device；To improve reliability that laser locating apparatus uses, use
Accuracy.
Embodiment 5
In the present embodiment, laser locating apparatus 101 may be used any one of structure of embodiment 1-3 and realize and determines
Position measures and/or laser locating apparatus 101 may include the alarm module used in embodiment 4.In the present embodiment, laser
Positioning device 101 can respectively the vertical direction face into object space, the plane parallel with horizontal direction face (for example, smallpox
Plate) emit and receives measuring beam, to measure in the plane parallel with horizontal direction face at a distance from practical point of irradiation and to lead
The distance of practical point of irradiation on vertical direction face.And then laser positioning dress is calculated according to the concrete operating principle in embodiment 1-3
Set the 101 actual location coordinate in object space.And/or utilize the acceleration sensing unit in laser locating apparatus 101
104, the alarm module in control unit and control unit according to the operation principle of embodiment 4 to realize when alarm module is sent out
When alarm signal, user is reminded to need to correct and/or the maintenance process laser locating apparatus.
In embodiment 5, laser locating apparatus can also realize that being located in laser locating apparatus in object space arrives and water
Square to the parallel plane in face (for example, ceiling) specific location, improve laser positioning disclosed in the utility model dress
It sets flexibility in use, increase its use scope.
Therefore, although describing the utility model with reference to specific example, wherein these specific examples are merely intended to
It is exemplary, rather than the utility model is limited, but is obvious to those skilled in the art
It is that on the basis of not departing from the spirit and scope of the utility model, the disclosed embodiments can be changed, be increased
Add or deletes.
Embodiment data listed herein are merely illustrative and not restrictive, and those skilled in the art can root
Other test datas appropriate are used according to the embodiments herein, technical solution to realize what claims herein were claimed
Range.
Claims (10)
1. a kind of laser locating apparatus, which is characterized in that including：
Distance measuring unit, measure respectively the laser locating apparatus in object space on horizontal direction face practical point of irradiation away from
From with to a distance from practical point of irradiation on vertical direction face；
Acceleration sensing unit measures the current acceleration direction of the laser locating apparatus；
Control unit is arrived according to the angular deviation between the current acceleration direction and gravity direction using described in measurement
The distance of practical point of irradiation and the distance to practical point of irradiation on vertical direction face calculate the laser on horizontal direction face
The elements of a fix of the positioning device in the object space.
2. laser locating apparatus according to claim 1, which is characterized in that the distance measuring unit includes：
First range finder module emits and receives first measuring beam in the horizontal direction face in the object space, to measure
The distance to practical point of irradiation on horizontal direction face；
Second range finder module emits and receives second measuring beam in the vertical direction face in the object space, to measure
The distance to practical point of irradiation on vertical direction face；
Wherein, the angle between first measuring beam and second measuring beam is set as fixed angle.
3. laser locating apparatus according to claim 1, which is characterized in that the distance measuring unit includes：
Laser emitting module emits light beam；
The light beam that the laser emitting module emits is divided into of the horizontal direction face in the object space by spectral module
One measuring beam and the second measuring beam to the vertical direction face in the object space；Wherein, spectral module is by described
Angle between one measuring beam and second measuring beam is set as fixed angle；
Laser pick-off measurement module receives first measuring beam and second measuring beam, described to level to measure
The distance of practical point of irradiation and the distance to practical point of irradiation on vertical direction face on the face of direction.
4. laser locating apparatus according to claim 1, which is characterized in that the distance measuring unit includes：Laser transmitting-receiving is surveyed
Module, spectral module are measured, wherein：
The laser transmitting-receiving measurement module emits light beam；
The spectral module is by first measuring beam in the horizontal direction face that the light beam is divided into the object space and arrives
Second measuring beam in the vertical direction face in the object space, wherein spectral module is by first measuring beam and institute
The angle stated between the second measuring beam is set as fixed angle；
The laser transmitting-receiving measurement module receives first measuring beam and second measuring beam, described to water to measure
The distance and the distance to practical point of irradiation on vertical direction face of square point of irradiation practical on face.
5. according to the laser locating apparatus described in any one of claim 2-4, which is characterized in that the range of the fixed angle
It is 85 ° -95 °.
6. laser locating apparatus according to claim 5, which is characterized in that the fixed angle is 90 °.
7. laser locating apparatus according to claim 5, which is characterized in that when the fixed angle is more than or less than 90 °
When, described control unit is interior to be equipped with deviation reparation value, and is currently added with described using the deviation reparation value, the gravity direction
The angular deviation between speed, the distance to practical point of irradiation on horizontal direction face and described arrive vertical direction face
The distance of upper practical point of irradiation come calculate the laser locating apparatus the object space the elements of a fix.
8. laser locating apparatus according to claim 1, which is characterized in that when the laser locating apparatus is from arbitrary height
When falling, the acceleration information of three orthogonal directions in falling process is sent to described by the acceleration sensing unit in real time
Control unit, all acceleration informations that described control unit passes through three orthogonal directions described in the acquisition falling process
Calculate the height fallen and record drop number of the laser locating apparatus.
9. laser locating apparatus according to claim 8, which is characterized in that described control unit further includes alarm module；
When the height fallen is higher than and/or is equal to height threshold, the alarm module sends out alarm signal.
10. laser locating apparatus according to claim 8, which is characterized in that described control unit further includes alarm module；
When the height fallen is less than the height threshold, but the height that the drop number of the laser locating apparatus falls more than described in
When the drop number threshold value of degree, the alarm module sends out alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102073.5U CN207717976U (en) | 2018-01-22 | 2018-01-22 | Laser locating apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102073.5U CN207717976U (en) | 2018-01-22 | 2018-01-22 | Laser locating apparatus |
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| CN207717976U true CN207717976U (en) | 2018-08-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196263A (en) * | 2018-01-22 | 2018-06-22 | 上海诺司纬光电仪器有限公司 | Laser locating apparatus |
| US11846507B2 (en) | 2019-01-25 | 2023-12-19 | Stanley Black & Decker Inc. | Laser level system |
-
2018
- 2018-01-22 CN CN201820102073.5U patent/CN207717976U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196263A (en) * | 2018-01-22 | 2018-06-22 | 上海诺司纬光电仪器有限公司 | Laser locating apparatus |
| WO2019141282A1 (en) * | 2018-01-22 | 2019-07-25 | 上海诺司纬光电仪器有限公司 | Laser positioning device |
| US11846507B2 (en) | 2019-01-25 | 2023-12-19 | Stanley Black & Decker Inc. | Laser level system |
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